use regrtest, so it might be interesting.
\begin{itemize}
+\item The \file{regrtest.py} script now provides a way to allow ``all
+resources except \var{foo}.'' A resource name passed to the
+\programopt{-u} option can now be prefixed with a hyphen
+(\character{-}) to mean ``remove this resource.'' For example, the
+option `\code{\programopt{-u}all,-bsddb}' could be used to enable the
+use of all resources except \code{bsddb}.
+
\item The tools used to build the documentation now work under Cygwin
as well as \UNIX.